I'm joining the thread here. I recently picked up a Model H that's has badly cracked and marred cork, and non-working electronics, and missing the right metal end cap (with the coin slot) and the right plastic rails. I recently picked up the right metal cover.
(IF anyone knows where I can get the right rail, PLEASE contact me!)
I'll be purchasing replacement cork soon and refurbishing the runway and scoring board.
Since the electronics didnt' work, I carefully removed them all and added a new 720p 27.5 inch TV and PC I had lying around, and started writing my own skeeball game software. (Some in-game images below).
If anyone's interested in the software and the progress thread, it's over at BYOAC: http://forum.arcadecontrols.com/index.php/topic,156300.msg1642100.html#msg1642100